Electrically-heated can-capping machine.



'PATENTED DEC. 3, 1907.

M. H. JOHNSON. ELEOTRIGALLY HEATED NAN GAPPING MACHINE.

APPLICATION FILED APR.5,1907

INVENTOR hiNTG'OMERY JOHNSON, OF UTECA, NEW YORK.

' ELEGQRZGALZY-HEATEI? GAH-QEzPFZHQ IIIUUDHR'IE.

N0. meme,

ii lpeeificetion 0i Lettere Patent.

Eetented Klee. 6. 3367.

Apfilicaticn filed April 5. 1907 Eesiel Kin; 366A95 To all wkom ii my camera: I Be it known that LMQNTGQMERY H. 01m

1 son, of Utice, in the county of Oneida and State of New Yorkhave invented eerteiii new and useful Improvements in Electrice Elly-Heated Cam-Capping Machines; and. l

- c'io hereby declaxe that the following is a full,

clear, and exam, deseriptien tliereef, which will enable etheie skilled in the tc which it'epperteins temake and use the same, ref erence being had to the eceempanyiug drew ings, and at the letters of reference merited thereon, which form pait of this speeiticm tion, 4

The object of my present invention is "t0 provide improvements in can capping Lia-- chines wherein or whereby PEOViSlOXl is more erticulerly made for utilizing electricity for fleeting the soldering irons and for cenvey- 'ing the cement t0 the several i ons while pro'vidin ior their several movements in the ce irse 0.17561: 0 stations. Aden in reguiatthe degree 0 heat oi the gure 1- shctve epartiel side elevation of e mechine emiacdying'ieete ree of my impwvements. Fig. 2 skews e eectienai view at same.

3 is en eniei'getl it the soldering Reagent its a,

5 is an enlarged detail View' of the ene- 'neetion between the current cw" duct/0m on the etatienai'y pert oi the chine 'and'the m5: rtent carrying devices en the soldering i 'en gmrtion.

Referring to the reference lettefre end was in a more particular description, 1 mate c t-tee thefi'eme oi the machine which: eateries ice bearings 2 ermnged at the top at the mechine vertical shafts 3 on which the soldering 7 iron 4 is mpmited, and t0 whiel'i-it is seemed by meaneief e clamping sleeve 5. 'In tlie form of eenst 'ucticn-ehewn in the drewmgs the soldez mg mm is g ven a rctery .I wfticn. mechanism for giving this r0- tary iqotion conmsts of a, worm wheel 6 I re vided en the upper end of the shaft 3 w ich is engaged b5 e'rote worm 7 provided on the she t 8. The she t 8 is driven by meens of the geezpinions 9 and 10, the letter including a beveled portion engaging with the beveled eer inion ,11 mounted one verticelly sli 'ng eeeve 12 en ging with the u irenigf shaft 18. T1e shaft 8 and t e sleeve 12 we cenfied in bearings on e verti ez'iliy nm vable be}: i l. (in which her the six-aft 3 eise bee e, be The Worm wheel 6 en the upper end (if the bearing. By ref-en and lcwez'izig the be? M the Irene 4 may be oil tram the tops of the 'cens or iewei' The soldering iron prepay consists 01" e iwilew shaft or spindle ,erticn 4; having enenlel'ge l disk 4 w tiicii emmter-sunk in the end te pmvide the usual annular sol deriiig tip 01" iaee. lfjneiiciin9; the spindle pcrtien e edjeeent to the art 48 are con.-

voluticne ei the heating eoi 4, which ceil is filfiffiiii. of spewed eenvclutiene of steel wire having e isigli tenwemtm'e eamtiicient, The velu as ei tile eeil 4 are separated swindle end the peat 4? by a; thin t a peeuiier ineuietez' eeneisting 0i i-i:fi um sil selution 'lhe ccnvelutiens are closed in and embedded in e cove'rieg I is also an iiasuietcr mmsist ing 0% a paste formed by the mixture of pcwtiei'ed pumice stene and solution of sotliem eiiieete. This peste when applied and dried etteeheeitself so securely to the heating ccil and is 0i sufficient elasticity to me" it frequently lieeted b the epplieetien 0f 21 current eiectmeity and subsequently ein ite adherence even when the eeii is eeelzeel. This cevcrueg together with the t5 arrangement of parts is such that heat Tomi the coil is eil'ectwely trensmittedte the eeldeiing iron and lcsefiom radiation reduced to a minimum. One end of the coil 4 indicated by 4 is attecl ed to a collector ring 4',

4? et e ietiiei' point epd insulated theref om en meuleted buehmg er eeilei 44-.

The other i Mounted in the frame of the machine there is provided a bar 25 referably of 'insulating material (dry wood will do) on the face of which are secured two conductor strips 25 and 25*. These strips respectively take positions substantially opposite the collector rings 4 and when the'irons are mounted in the machine. At each iron these. conductors 25 and 25 are respec tively provided with a pair of spring flexible clamping connections 26 and 27, the base ends of which are electrically connected to the conductors 25 and 25", respectively, and the outstanding ends of which are formed into curved portions a, which more or less encircle and engage the res ective collector rings 4* and 4 and may e rovided with ears in which is mounted a bmding or clamping bolt b.-

When the irons aredropped on to the cans to perform their soldering operation the can may be more or less out of its exact intended position, which requires the iron to be mounted loose enough in its bearings to allow it to swing more or less until it finds its proper bearing on the can. The clamp conductors 26 and 27 allow the ironto swing around within certain limits without interfering with their efiiciency in carrying the current to the heating coil. The conductors 25 and 25 will be connected bysuitable cables or otherwise with a dynamo or other suitable source 'of electric energy. The conductors 25 and" 25 will be extended longitudinal of the machine a sufficient distance to accommodate the full number of soldering irons'which a machine is designed to handle. The width of the collector rings 4 and 4 is sufiicient to provide for the rising and falling movement of the soldering irons without allowing these rings to become disengaged from the conductors 26 and27, and the arrangement is also such as to allow the irons to be rotated while maintaining a perfeet electrical connection. Y

Extending through the hollow shaft 3 and the spindle of the soldering iron is the usual push rod 30 provided with a weight 31 at its u per end and serving to hold down the cap of the can when the soldering iron is being withdrawn or lifted.

The operation of the ordinary can capping machine is so well understood that a specific description of the operation of this device may be omitted. It may, however, be stated that a particular advantage of this construction is that the heating coil is so effectively laced and secured with reference to the ody of the iron that the'heat is eflectively and satisfactorily transmitted, and also the irons are to a large extent self-regulating as to their heat, for as the heating coil becomes hot its current carrying capacity is correcapacity increases, and the total amount of effective heat produced is correspondingly increased. This is quite an important feature in a machine carrying a number of soldering irons all on the same circuit. Here-. tofore great difficulty has been experienced in employing for a heating coil a conductor which effectively reduced the quantity of the flow of the current as it increased in temper- Mum, and vice versa, and in maintaining the insulation and close adhesion between the coil and the soldering iron which is necessary to effect a satisfactory transmission of the heat from the coil to the iron. By the method of construction which is herein employed and the use of the materials herein specified a most satisfactory construction in this behalf has been roduced.

' It will e' noted that while the soldering iron herein shown and described is particularly adapted for use in such machines as re quire the soldering iron to be raised and lowered, and also rotated, the iron can be likewise readily used in that class of machines wherein the iron is sim ly raised and lowered while the can is rotated, or even in a class 0 machine where the iron has no vertical ,or rotary movement.

What I claim as new and desire to secure by Letters Patent is: s

. 1. The combination in a can capping machine of a soldering iron having an electric heating coil embodied therein, collector rings surrounding the shank of the soldering iron to which ends of the coil are respectively connected, means on the machine for making contact with said collector rings and means for rotating and raising and lowering the conductors of a soldering iron adapted to be mountedin said machine consisting of a general cylindrical body having a heating coil mounted on one portion of the body,- insu lated collector rings mounted on and surroundihg other portions of the body and connected with the ends of the heating coil, respectively, saidrings being, respectively, of a width greater than the distance that the irons are arranged to move vertically. and a connector mountedon the machine and en gaging with said collector rings, respectively, In witness whereof, I have affiked my sigsubstantially as set forth. nature, in presence of two witnesses, this 4. A soldering iron consisti of a body 25th day of March 1907. and a heating coil arran ed in c ose proxi'm- MONTGOMERY H. JOHNSON.

5 ity to the surface of the ody and embedded Witnesses:

in a composition of sodium silicate and pu'm- GEO. E. RENDELL ice stone, substantially as set forth. I E. S. HEssE. 

